Merge pull request #130 from otan-cockroach/coeff_fix

format: do not output 0's after decimals for coeff < -2000

Merge pull request #128 from otan-cockroach/decimal_fix

format: format 0E-x where x > 6 like PostgreSQL does

Merge pull request #125 from miretskiy/decimal

apd: Improve string conversion efficiency

Merge pull request #124 from nvanbenschoten/nvanbenschoten/remErrors

apd: drop github.com/pkg/errors

Merge pull request #115 from nvanbenschoten/nvanbenschoten/stripZeros

apd: don't strip trailing zeros in Quo and Sqrt

Merge pull request #112 from nvanbenschoten/nvanbenschoten/inlineGoError

apd: avoid function calls on hot paths

Merge pull request #111 from nvanbenschoten/nvanbenschoten/gcassert

apd: use gcassert to check that tmp big.Ints don't escape, add to CI

Merge pull request #89 from kardianos/kardianos-example

apd: update example to use apd/v2

Merge pull request #85 from cockroachdb/mjibson-patch-1

Update go.mod to use v2

Merge pull request #81 from cockroachdb/mod

Final cleanup before next release